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 Catalina 25 Specific Forum
 Halyard diameters & breaking strength		  New Topic  Topic Locked
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StSimon
Captain

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USA
298 Posts
Initially Posted - 09/30/2005 :  18:42:18  Show Profile
Does anyone know the breaking strength of the 5/16" halyards that come from the factory? I'm switching to all rope halyards and am considering moving down to 1/4" to better fit in the existing masthead sheaves.

Any advice is welcome (even if it's a big DON'T DO IT !!)
Fair winds,

Andy, Breakin' Wind, 1984 C25 SK SR
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Leon Sisson
Master Marine Consultant

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USA
1893 Posts
Response Posted - 09/30/2005 :  20:06:25  Show Profile  Visit Leon Sisson's Homepage
StSimon,

Modern yacht line is available in such high tensile strength that the limiting factor becomes how small a line you're willing to tension with your hands, and how deep your pockets are.

For example, New England Ropes V-100 1/4" double braid has a breaking strength of 4,500#, 0.5% stretch at 675# tension, and lists for close to $2/ft. New England Ropes V-12 is even more extreme in both price and strength. Some folks splice on a fatter tail or an additional layer of larger cover braid over the tail to improve the hand of high tech line. Once again, there's that pocket issue.

I like the feel of 3/8" polyester double braid (approx. 4,400# breaking strength and under $1/ft. for New England Ropes Sta-Set). I think 5/16" double braid would be OK to handle. But 1/4" is getting down into the cheese cutter wire range by my thinking.

-- Leon Sisson
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StSimon
Captain

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USA
298 Posts
Response Posted - 09/30/2005 :  20:17:14  Show Profile
Good stuff Leon.

I'm heading over to the local WM to feel some different sizes. I wonder what the maximum size that would work with the existing masthead sheaves would be?

Also, how long are each of your halyards, are they led to the cockpit, and what type mast do you have?
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Frank Hopper
Past Commodore

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Pitcairn Island
6776 Posts
Response Posted - 09/30/2005 :  20:49:38  Show Profile  Visit Frank Hopper's Homepage
I am very happy with my 1/4" line. It takes up far less room on deck and I have no problem handling it. I always wear sailing gloves. I would probably not like my 1/4" as much as I do if I bear handed it.
The first picture has three different grades of 1/4" line. The stuff on the winch is the high tech 4800# stuff, the blue is sta-setX for my clew reef, the white red fleck is an imitation Sta-Set off eBay for my 6:1 Cunningham.
The second picture is of the high tech stuff on the winch, 3/8" from my boom vang in the other. That line has since been replaced buy another 1/4" sta-set X line for my tack reef.
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atgep
Master Marine Consultant

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1009 Posts
Response Posted - 09/30/2005 :  21:07:35  Show Profile
I have 1/4 and am very happy with it. The furler halyard is up all the time anyways. The main works very well and seems(to me) to run smoother in the pulleys.

Tom.
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Champipple
Master Marine Consultant

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USA
6855 Posts
Response Posted - 10/01/2005 :  20:56:59  Show Profile  Visit Champipple's Homepage
Take a look at the layline.com site. they have tons of info regarding breaking strength. You might have to dig a bit for it, but its there.
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.